<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
        <link rel="stylesheet" href="./css/属性选择css.css">
    </head>
    <body>
        <input type="text" size="20" value="jack">
        <br>
        <input type="password" size="20">
        <br>
        <input type="button" value="OK">
    </body>
</html>